Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 954 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 49 (b) 56 (c) not enough info (d) 14
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Saanvi bought 4 notebooks and a lunch box for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹86 (b) ₹90 (c) ₹22 (d) not enough info
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
6. 6.🧩 Saanvi bought 2 balls and a bag for ₹70 in all. Each ball cost the same. What did one ball cost? (a) ₹70 (b) not enough info (c) ₹35 (d) ₹68
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
10. 10.🧩 Aarav bought 6 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) not enough info (c) ₹40 (d) ₹240
11. 11.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
12. 12.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
13. 13.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
14. 14.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) no, check more (d) yes, mangoes match
15. 15.🧩 Aarav is 11 years old. Meera is 3 years older than Aarav. How old is Meera? (a) not enough info (b) 15 (c) 14 (d) 3
16. 16.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
17. 17.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 12 (c) not enough info (d) 60
18. 18.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 4 PM
19. 19.🧩 A box has 5 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 48 (c) 40 (d) 13
20. 20.🧩 A box has 3 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 36 (b) not enough info (c) 27 (d) 12
21. 21.🧩 Tara bought 3 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹45 (c) ₹120 (d) ₹40
22. 22.🧩 Meera is 6 years old. Kabir is 9 years older than Meera. How old is Kabir? (a) 15 (b) not enough info (c) 16 (d) 9
23. 23.🧩 Kabir bought 2 balls for ₹20 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹20
24. 24.🧩 Diya bought 3 notebooks for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹150 (c) ₹55 (d) not enough info
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
26. 26.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
27. 27.🧩 Nisha is 12 years old. Rohan is 7 years older than Nisha. How old is Rohan? (a) 7 (b) 20 (c) 19 (d) not enough info
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Rohan bought 3 pens and a lunch box for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹200 (b) ₹197 (c) ₹66 (d) not enough info
30. 30.🧩 Tara is 7 years old. Ananya is older than Tara. How old is Ananya? (a) 9 (b) 12 (c) 8 (d) not enough info
31. 31.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
32. 32.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 8 PM
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
35. 35.🧩 Arjun is 6 years old. Aarav is older than Arjun. How old is Aarav? (a) 11 (b) not enough info (c) 8 (d) 7
36. 36.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
37. 37.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 10 (c) 50 (d) 5
38. 38.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 2 PM (d) not enough info
39. 39.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) 12 (b) 42 (c) not enough info (d) 36
40. 40.🧩 Kabir bought 5 notebooks for ₹75 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹75

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